To those who study her, Nature reveals herself as extraordinarily fertile and ingenious in devising means, but she has no ends which the human mind has been able to discover or comprehend.

The mind leaps, and leaps perhaps with a sort of elation, through the immensities of space, but the spirit, frightened and cold, longs to have once more above its head the inverted bowl beyond which may lie whatever paradise its desires may create.

Both the cockroach and the bird would get along very well without us, although the cockroach would miss us most.

Cats seem to go on the principle that it never does any harm to ask for what you want.

Nature, in her blind thirst for life has filled every possible cranny of the rotting earth with some sort of fantastic creature.

Logic is the art of going wrong with confidence.

Science has always promised two things not necessarily related; an increase first in our powers, second in our happiness or wisdom, and we have come to realize that it is the first and less important of the two promises which it has kept most abundantly.